To provide a friction plate for wet type multi-disc clutch, in which a sharp sense of disengagement is obtained and whose endurance lifetime is prolonged.

A friction material 10 is fixed to the surface of a core plate 7 so that a friction plate 20 is formed. The friction material 10 is furnished with an oil passage 21 penetrating from its inner circumference surface 10a to the outer circumference surface 10b and an oil groove 1 which opens at the inner circumference surface 10b but is not penetrating. The ratio of area of the oil groove 11 to the oil passage 21 should range from 25% to 100%, and the width of the oil groove 11 should be below that of the oil passage 21. The length of the oil groove 11 is made over one quarter of the length of the oil passage, and should not necessarily be constant. It is preferable that the width of both oil passage and oil groove is below 3 mm, and it may be accepted that they are inclined at a certain angle to the radial direction.